Sleep Duration and Longevity

Does sleep duration affect how long you live?

Yes. Both too little and too much sleep are linked with higher mortality, while 7–9 hours per night supports optimal longevity.

Explanation

Large population studies show a U-shaped relationship between sleep and mortality: people sleeping fewer than 6 hours or more than 9 hours have increased risk of cardiovascular disease, diabetes, and premature death. Insufficient sleep impairs glucose metabolism, raises blood pressure, and accelerates neurodegeneration. Oversleeping often reflects underlying health issues that drive mortality risk.

Optimal sleep duration supports hormonal balance, immune defense, and brain function. Sleep is also when cellular repair, memory consolidation, and metabolic recalibration occur.

Practical Emphasis: Aim for 7–9 hours of restorative sleep most nights. Track your sleep with wearables and make adjustments for consistency, not just duration.

Takeaway (Action Tip)

Target 7–9 hours of nightly sleep for maximum health and survival benefit.

Reference

European Heart Journal, 2019 – Sleep duration and mortality

How Memorial Longevity Clinic Can Help

We measure sleep duration and quality using wearables and lab testing, then tailor personalized strategies to optimize nightly rest.

Disclaimer

The information provided on this page is for educational and informational purposes only and is not intended as medical advice. This content should not replace professional medical consultation, diagnosis, or treatment. Always seek the guidance of your physician or other qualified healthcare provider before making any changes to your health, lifestyle, or treatment plan.

Schedule a service or consultation at the link below to get started with your longevity journey.